Answer:
θr will increase.
Explanation:
We know that when light travel from one medium to another medium the relationship between refractive index and angle given as
na. sinθa = nb . sinθr
![sin \theta _r=\dfrac{n_asin\theta _a}{n_b}](https://tex.z-dn.net/?f=sin%20%5Ctheta%20_r%3D%5Cdfrac%7Bn_asin%5Ctheta%20_a%7D%7Bn_b%7D)
If na is increased (by using a different type of glass) but θa is kept the same then sinθr will also increase.
So answer is θr will increase.
I would say that it is Meteors, Meteorites, and comets. (METEORS may be wrong)
Answer: B 1/5, D .20
hope this helps let me know if it's wrong